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Agriculture & Environment

Earth Sciences
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Uneven Nutritional Payoffs for Marine Predators Revealed

New study finds that the nutritional value of prey within a single species can widely vary, offering key insights for food web dynamics and ecosystem change The hunt is on and a predator finally zeroes in on its prey. The animal consumes the nutritious meal and moves on to forage for its next target. But how much prey does a predator need to consume? Following a period of massive starvation among animals living along the California coast, University of California…

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Environmental Conservation

VTT Unveils High-Tech Starch-Based Eco-Friendly Paper

Raw starch replaces mineral raw materials

VTT, Technical Research Centre of Finland has developed natural materials from raw starch, which helps to make very high-quality paper that is fully recyclable. Due to the materials used for filling, adhesive and coating purposes, paper developed from starch is 20 to 30 per cent lighter, which means a reduction in transport costs too. The new raw materials of starch paper and their manufacturing methods are expected to be a success.

Environmental Conservation

American Pikas Face Extinction in Great Basin Due to Climate Change

Climate change, human factors likely culprits

The tiny rabbit-like American pika, an animal species considered to be one of the best canaries in a coal mine for detecting global warming in the western United States, appears to be veering toward the brink of extinction in the Great Basin.

New research indicates the small mammals, which are very sensitive to high temperatures, are being pushed upward in their mountain habitat and are running out of places to live. Climate

Environmental Conservation

Smithsonian guide to the biodiverse marine environment of Panama’s Bocas del Toro

Coral reefs, coastal rainforest, land-grab, industrial bananas and organic cacao, mangroves, tourist boom, eclectic cultural mix: A Caribbean Journal of Science special issue presents the first scientific overview of the marine environment in Bocas del Toro Province near Panama’s border with Costa Rica. With color photographic guide to marine invertebrates–the volume, edited by Dr. Rachel Collin, director STRI’s research station in Bocas–debuts new species and new records for Panama and provides

Earth Sciences

How River Shifts Unlock Secrets of Asia’s Mountain Formation

Scientists have long recognized that the collision of the earth’s great crustal plates generates mountain ranges and other features of the Earth’s surface. Yet the link between mountain uplift and river drainage patterns has been uncertain. Now scientists have used laboratory techniques and sediment cores from the ocean to help explain the how rivers have changed course over millions of years.

In a report published in the December 15 issue of Nature, scientists Peter Clift of t

Environmental Conservation

Satellites Boost Rebuilding Efforts After Asian Tsunami

The deadly Indian Ocean tsunami that swept across coastlines on 26 December 2004 took the lives of more than 200 000 people. The sheer scale of the catastrophe meant that Earth Observation was vital both for damage assessment and for co-ordinating emergency activities. Through the year that followed, satellite-based maps from ESA’s Respond consortium continued to support rebuilding efforts.

Space-based assistance is being provided through Global Monitoring for Environment and

Environmental Conservation

Acetaminophen in Wastewater: Insights from NIST Study

Researchers at the National Institute of Standards and Technology (NIST) have published an interesting study that sheds light on the fate of a familiar pharmaceutical as it enters the waste stream. In work initially described last year, NIST chemists investigated probable chemical reactions involving acetaminophen when the drug is subjected to typical wastewater processing. Acetaminophen is the most widely used pain reliever in the United States, and a study of 139 streams by the U.S. Geological Sur

Environmental Conservation

Treated Wood: Long-Term Arsenic Leaching Risks Revealed

Arsenic from treated lumber used in decks, utility poles and fences will likely leach into the environment for decades to come, possibly threatening groundwater, according to two research papers published online Wednesday.

Researchers from the University of Miami, the University of Florida and Florida International University examined arsenic leaching from chromated copper arsenate, or CCA-treated wood, from a real deck as well as from simulated landfills.

Their conclusi

Environmental Conservation

Discovering Ivory-Billed Woodpecker Habitat in Arkansas

Elvis. That is the nickname that Larry Mallard, refuge manager for the White River National Wildlife Refuge in southeastern Arkansas, uses for the ivory-billed woodpecker (Campephilus principalis), now being sought in Mallard’s woods by Cornell Lab of Ornithology staffers and volunteers.

Mallard betrays a hint of mixed feelings: He has been managing the area for other endangered species, but only since the woodpecker’s rediscovery has the refuge’s conservation needs received any

Earth Sciences

Cluster helps to protect astronauts and satellites against ’killer electrons’

ESA’s Cluster mission has revealed a new creation mechanism of ‘killer electrons’ – highly energetic electrons that are responsible for damaging satellites and posing a serious hazard to astronauts.

Over the past five years, a series of discoveries by the multi-spacecraft Cluster mission have significantly enhanced our knowledge of how, where and under which conditions these killer electrons are created in Earth’s magnetosphere.

Early satellite measurements in the 1950

Earth Sciences

Earth’s Rotation Slows: 2005 to Add Leap Second

Owing to the gradual slowing down of the Earth’s rotation, the International Earth Rotation and Reference Systems Service, based at the Paris Observatory, has announced that 2005 will contain an extra second.

The required leap second will be added at the end of 31st December, thus delaying the arrival of 2006 by one second. Although this will be the 23rd such leap second to be added since its introduction at the end of June 1972, this year’s leap second will be the first for seven

Earth Sciences

Mars Features Shaped by Meteorite Strikes, Not Evaporated Lakes

Geologic features at the Opportunity landing site on Mars were formed not by a lake that evaporated but by constant strikes from meteorites, say two Arizona State University geologists.

The site where the Mars Exploration Rover Opportunity landed has sediments and layered structures that are thought to be formed by the evaporation of an acidic salty sea. The prevailing thought is that when this Martian sea existed it may have supported life forms and thus would be a prime site

Earth Sciences

2005 science breakthrough: Revising Earth’s early history

Earth’s future was determined at birth. Using refined techniques to study rocks, researchers at the Carnegie Institution’s Department of Terrestrial Magnetism (DTM) found that Earth’s mantle–the layer between the core and the crust–separated into chemically distinct layers faster and earlier than previously believed. The layering happened within 30 million years of the solar system’s formation, instead of occurring gradually over more than 4 billion years, as the standard model suggests. The ne

Environmental Conservation

Reviving Fisheries: Sustainable Solutions Post-Tsunami

Tsunami survivors need sustainable alternatives to fishing depleted waters
Higher Power of Replacement Boats, Fishing Gear Increasing Catch Capacity;
Experts Recommend Boat Registry, Enforcement of Limits

One year after a tsunami devastated South Asian communities, global fisheries experts say habitat restoration, retraining and education programs are much needed to revive severely exhausted fisheries and steer survivors into more sustainable livelihoods than fishing.

Environmental Conservation

Carbon Sequestration: Potential Environmental Trade-Offs

Growing tree plantations to remove carbon dioxide from the atmosphere to mitigate global warming — so called “carbon sequestration” — could trigger environmental changes that outweigh some of the benefits, a multi-institutional team led by Duke University suggested in a new report. Those effects include water and nutrient depletion and increased soil salinity and acidity, said the researchers.

“We believe that decreased stream flow and changes in soil and water quality are

Environmental Conservation

Antarctica Training Prepares Crew for Mars Mission

A few weeks before leaving for the Antarctic Concordia Station, the Italian-French crew that will spend over one year in one of the harshest, isolated environments on Earth, attended two days of preparatory training at ESA’s Headquarters in Paris, France. During their stay at the research station the crew will participate in a number of ESA experiments – the outcome of which will help prepare for long-term missions to Mars.

As part of the Aurora Exploration Programme, ESA is c

Earth Sciences

Most of Arctic’s Near-Surface Permafrost May Thaw by 2100

Global warming may decimate the top 10 feet (3 meters) or more of perennially frozen soil across the Northern Hemisphere, altering ecosystems as well as damaging buildings and roads across Canada, Alaska, and Russia. New simulations from the National Center for Atmospheric Research (NCAR) show that over half of the area covered by this topmost layer of permafrost could thaw by 2050 and as much as 90 percent by 2100. Scientists expect the thawing to increase runoff to the Arctic Ocean and relea

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